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      Scientific American December 21, 1918

      The "Hush" Ships of the British Navy

      Advanced anti-submarine designs, and more.

      • December 21, 1918

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      More in the December 21, 1918 issue of Scientific American
      • Correspondence - December 21, 1918
      • The Needs of the Patent Office
      • Ice Formation Over a Stream, A Record Shot of Grizzly Bears, and more
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